ANDROID: mm: export isolate_folio and reclaim_pages

export isolate_folio and reclaim_pages to support to reclaim pages in ko

Conflicts:
	mm/vmscan.c
	isolate_folio -> isolate_page

Bug: 390332073
Change-Id: Ib224548baed1217ef96cd3974775c8dc65e77a50
Signed-off-by: yipeng xiang <yipengxiang@honor.corp-partner.google.com>
(cherry picked from commit 0e47a739)
(cherry picked from commit b4c5ce4f)
Signed-off-by: Hailong Liu <liuhailong@oppo.com>